US4698872A - Wiper apparatus for vehicles - Google Patents

Wiper apparatus for vehicles Download PDF

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Publication number
US4698872A
US4698872A US06/819,050 US81905086A US4698872A US 4698872 A US4698872 A US 4698872A US 81905086 A US81905086 A US 81905086A US 4698872 A US4698872 A US 4698872A
Authority
US
United States
Prior art keywords
wiper
arm
wiper arm
window pane
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/819,050
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English (en)
Inventor
Toshiaki Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Assigned to AISIN SEIKI KABUSHIKI KAISHA, A CORP OF JAPAN reassignment AISIN SEIKI KABUSHIKI KAISHA, A CORP OF JAPAN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WATANABE, TOSHIAKI
Application granted granted Critical
Publication of US4698872A publication Critical patent/US4698872A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • B60S1/3411—Wiper arms; Mountings therefor with means for varying wiper-blade pressure on windshield during operation

Definitions

  • the present invention relates to a wiper apparatus for vehicles and, more particularly, to a wiper apparatus for vehicles in which the pressing force pressing a wiper blade against a window pane is adjustable.
  • a conventional wiper apparatus for vehicles is comprised of a wiper blade 6 for wiping the surface of a window pane 6a, a wiper arm 3 rotatably supporting the wiper blade 6 through a pin 3a, and a driving arm 2 connected to the wiper arm 3 through a pivoting pin 5 at one end thereof.
  • the other end of the driving arm 2 (not shown) is operatively connected to a motor 1 for oscillating the wiper arm 3.
  • a tension coil spring 4 disposed between the wiper arm 3 and the driving arm 2 pivots the wiper arm 3 around the pivoting pin 5 to bias the blade 6 towards the front surface of the window pane 6a.
  • the blade 6 wipes the front surface of the window pane 6a when the motor 1 operates the driving arm 2.
  • the wiper apparatus of this invention comprises a blade member for wiping a vehicle window pane, a wiper arm member supporting the blade, a driving arm means for oscillating the wiper arm member across the surface of the window pane, the driving arm means pivotally connected to the wiper arm, drive means operatively connected to the driving arm for driving said driving arm means so as to oscillate the wiper arm, a movable bracket member movably disposed on the driving arm means, biasing means disposed between the movable bracket member and the wiper arm member so as to force the blade member into contact with the window pane, and an adjusting means operatively connected to the movable bracket member for adjusting the position of the movable bracket member.
  • FIG. 1 shows a partial cross sectional view of a wiper apparatus for wiping a vehicle window pane constructed according to a first embodiment of the invention
  • FIG. 2 shows a partial cross sectional view of a wiper apparatus constructed according to a second embodiment of the invention.
  • FIG. 3 shows a partial cross sectional view of a conventional wiper apparatus for vehicles.
  • the wiper apparatus for wiping a vehicle window pane is represented generally by the numeral 20, and, includes according to the present invention, a blade member for wiping the vehicle window pane.
  • the wiper apparatus 20 has a blade (not shown) made of elastic materials such as rubber and the blade is arranged to be in contact with the front surface of a window pane 6a of a front vehicle window.
  • the central portion of the blade is preferably rotatably supported by an upper side or end (not shown) of a wiper arm 3 through a pin (not shown) in the manner of the conventional wiper apparatus of FIG. 3 showing blade 6 connected to arm 3 through pin 3a.
  • the blade is always positioned so as to be parallel to the surface of the window pane 6a.
  • a driving arm means for angularly oscillating the wiper arm is provided.
  • a driving arm 2 is formed in an L-shape and is comprised of an upper arm 2b and a cylindrical lower arm 2a.
  • the lower arm 2a is preferably rotatably supported in a body bracket 7 through a pair of ring bearings 8 around the peripheral surface thereof.
  • One end of the lower arm 2a passes through the upper arm 2b at the lower end of the upper arm 2b, and the lower arm 2a is fixed to the upper arm 2b by the engagement between a threaded portion thereof and a nut 16.
  • the other end of the lower arm 2a passes through one end of the link 15 and is fixed to the link 15 by the engagement between a threaded portion of the lower arm 2a and a nut 19.
  • a drive means operatively connected to the driving arm means, is provided for driving the driving arm means so as to oscillate the wiper arm member.
  • the link 15 is operatively connected to a motor (not shown) through a ball joint 15a mounted on the link 15 so as to oscillate the link 15, the lower arm 2a, and the conventional wiper apparatus mentioned above.
  • the upper side of the upper arm 2b is rotatably connected to the lower side or end of the wiper arm 3 through a pivot pin 5 disposed so as to be substantially parallel to the window pane 6a.
  • the wiper arm 3 Upon energization of the motor, the wiper arm 3 oscillates around the lower arm 2a of the driving arm 2 and the blade wipes the front surface of the window pane 6a.
  • a movable bracket member movably disposed on the driving arm means is provided.
  • a slidable shaft 29 is disposed in the cylindrical lower arm 2a of the driving arm 2, and slidable shaft 29 is slidably supported along the axial direction of the lower arm 2a by ring shaped bearings 33,43.
  • the driving arm means have a hollow cylindrical portion for housing the movable bracket member. It is further preferred that the hollow cylindrical portion be coaxially aligned with the oscillation axis of the driving arm means.
  • a flanged portion 37 is integrally formed on the slidable shaft 29 and arranged between the bearings 33 and 43.
  • a coil spring 36 is disposed between the bearing 43 and the nut 19 and the spring 36 biases the sliding shaft 29 in the direction of arrow F through the bearing 43.
  • a biasing means having two ends is disposed between the movable bracket member and the wiper arm member for biasing the wiper arm member towards the window pane.
  • tension coil spring 4 is disposed between the wiper arm 3 and the slidable shaft 29 so as to bias the wiper arm 3 for rotation around the pin 5 in the direction of arrow H to force the blade into contact with the window pane 6a.
  • the open end of the spring 4 is engaged with the wiper arm 3 at point P, and the other spring end is engaged with a link 10 which is pivotally mounted on the flanged portion of the slidable shaft 29 through a pin 12.
  • an adjusting means operatively connected to the movable bracket member for adjusting the position of the movable bracket member.
  • the slidable shaft 29 extends beyond the base of the lower arm 2a and a bearing 34 is mounted on the extended portion of the slidable shaft 29.
  • An L-shaped lever 24 is rotatably mounted on the body bracket 7 through a pin 24a. One end of the lever 24 is fixedly connected to a connecting ring 23 into which the extended portion of the slidable shaft 29 is inserted.
  • the bearing 34 disposed on the shaft 29 is engageable with the connecting ring 23.
  • the other end of the lever 24 engages one end of a rod 25.
  • the other of the rod 25 is connected to an adjusting actuator B that is adapted to pull and push the rod 25 along the direction of arrow G to change the position of the rod 25.
  • An operating switch (not shown), disposed in the vehicle passenger compartment, is operatively connected to the actuator B.
  • the body bracket 7 is fixedly mounted on a vehicle body (not shown).
  • the operating switch In operation of the wiper apparatus 20, when the blade does not wipe the window pane sufficiently due to airflow caused by high vehicle speeds, the operating switch is actuated to change the angular position of the blade relative to the window pane.
  • the rod 25 When the operating switch is actuated, the rod 25 is caused to move by actuator B in the direction of arrow G, and the lever 24 rotates around the pin 24a.
  • the connecting link 10 and the coil spring 4 are rotated slightly in a counterclockwise direction with respect to the engaging point P, between the wiper arm 3 and the coil spring 4, as shown by the broken-line view.
  • a cylindrical lower arm 2a of a driving arm 2 has a threaded shaft 9 and a nut 11 threaded on the threaded portion 9a thereof.
  • the threaded shaft 9 is rotatably supported by a boss portion of the lower arm 2a at one end thereof and by a nut 19 fixedly threaded on the lower arm 2a at the other end.
  • the other end of the threaded shaft 9 has an enlarged portion 9a, and this enlarged portion 9a is engaged with the nut 19 by a flange, for example, so that the sliding movement of the threaded shaft 9 is arrested.
  • the threaded shaft 9 extends beyond the lower arm 2a, and a gear 13 is fixedly mounted thereon.
  • the gear 13 is engaged with another gear 14 operatively connected to a motor M.
  • the motor M is mounted on the bracket 18 fixed on the lower arm 2a.
  • the nut 11 threaded on threaded shaft 9 is connected to the link 10 through the pin 12.
  • a manual switch (not shown) disposed in the vehicle passenger compartment is electrically connected to the motor M so as to actuate the motor M.
  • the rotational moment inertia around the pin 5 is adjusted by the rotation of the coil spring 4 around the engaging point P, between the coil spring 4 and the wiper arm 3, to change the angle between the coil spring 4 and the wiper arm 3 in the above mentioned embodiments.
  • the load on the coil spring 4 never substantially changes, only the spring angle changes.
  • the sliding force applied to slide shaft 29 of the first embodiment or the rotating force applied to threaded shaft 9 of the second embodiment for changing the spring angle is not large so that the motor M may be small in size. Also, large mechanical strength in the slide shaft 29 or the threaded shaft 9 is not required.
  • the wiper apparatus according to the invention is also applicable to the vehicle rear window.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
US06/819,050 1985-01-16 1986-01-15 Wiper apparatus for vehicles Expired - Lifetime US4698872A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60006170A JPH0613284B2 (ja) 1985-01-16 1985-01-16 ワイパ装置
JP60-006170 1985-01-16

Publications (1)

Publication Number Publication Date
US4698872A true US4698872A (en) 1987-10-13

Family

ID=11631069

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/819,050 Expired - Lifetime US4698872A (en) 1985-01-16 1986-01-15 Wiper apparatus for vehicles

Country Status (3)

Country Link
US (1) US4698872A (de)
JP (1) JPH0613284B2 (de)
DE (1) DE3600454A1 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785491A (en) * 1986-03-31 1988-11-22 Aisin Seiki Kabushiki Kaisha Rotary and reciprocating drive device
US4991251A (en) * 1987-05-02 1991-02-12 Swf Auto-Electric Gmbh Wiper arm, especially for windshield wiper systems on motor vehicles
US4993102A (en) * 1987-09-03 1991-02-19 Asmo Co., Ltd. Variable-driving unit for wipers and a wiper device incorporating the same
US5056182A (en) * 1989-09-08 1991-10-15 Aisin Seiki Kabushiki Kaisha Wiper structure with variable wiping pressure
US5062175A (en) * 1990-05-16 1991-11-05 General Motors Corporation Windshield wiper with adjustable wiping pressure
US5320333A (en) * 1993-03-01 1994-06-14 Jean Koch Spring for windshield wiper arm
US5327613A (en) * 1990-09-27 1994-07-12 Nissan Motor Co., Ltd. Automotive wiper apparatus with combined operation of spraying and wiping
US5426815A (en) * 1994-07-08 1995-06-27 Ford Motor Company Wiper system including an adjustable arm load mechanism
US5504406A (en) * 1994-01-03 1996-04-02 Sgs-Thomson Microelectronics, Inc. Wiper system with variable holddown force
US5577292A (en) * 1992-09-26 1996-11-26 Itt Automotive Europe Gmbh Windscreen wiper with pressure adjusting means
US5619886A (en) * 1994-06-30 1997-04-15 Mitsuba Electric Manufacturing Co., Ltd. Operable angle adjusting structure for wiper
US5822827A (en) * 1997-02-20 1998-10-20 Itt Automotive Electrical Inc. Variable pressure windshield wiper system
CN102582580A (zh) * 2012-03-13 2012-07-18 浙江吉利汽车研究院有限公司 雨刮器压紧力调整机构

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628342A1 (de) * 1986-08-21 1988-02-25 Bayerische Motoren Werke Ag Scheibenreinigungsvorrichtung fuer kraftfahrzeuge
JPH07115629B2 (ja) * 1986-12-23 1995-12-13 市光工業株式会社 押圧力の調整可能なワイパ装置
DE3719874C2 (de) * 1987-06-13 1998-07-09 Bosch Gmbh Robert Wischvorrichtung für Scheiben von Kraftfahrzeugen
JPH01132446A (ja) * 1987-11-19 1989-05-24 Asmo Co Ltd ワイパの可変駆動装置
DE4008352A1 (de) * 1990-03-15 1991-09-19 Bosch Gmbh Robert Wischvorrichtung fuer scheiben von kraftfahrzeugen
DE4429608A1 (de) * 1994-08-20 1996-02-22 Teves Gmbh Alfred Scheibenwischvorrichtung mit verstellbarer Anpreßkraft
DE10343573A1 (de) * 2003-09-19 2005-04-14 Volkswagen Ag Aufprallweiche Lagerung einer Antriebswelle eines Scheibenwischers an einem Fahrzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1697136A (en) * 1929-01-01 op btfffalo
GB1021131A (en) * 1964-02-07 1966-02-23 Dudleys Redditch Ltd Improvements relating to windscreen wipers
JPS55160637A (en) * 1979-05-31 1980-12-13 Mitsuba Denki Seisakusho:Kk Wiper arm responsive to vehicle speed
US4370774A (en) * 1978-01-06 1983-02-01 Itt Industries, Inc. Windshield wiper assembly
US4439886A (en) * 1981-03-30 1984-04-03 Honda Giken Kogyo Kabushiki Kaisha Wiper device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745458U (de) * 1980-08-29 1982-03-12
DE3316456A1 (de) * 1983-05-05 1984-11-08 Siemens AG, 1000 Berlin und 8000 München Spulenkoerper
DE3347546C2 (de) * 1983-12-30 1994-01-13 Bosch Gmbh Robert Scheibenwischvorrichtung für Kraftfahrzeuge
DE3428710A1 (de) * 1984-08-03 1986-02-13 SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen Scheibenwischeranlage fuer kraftfahrzeuge
DE3444927A1 (de) * 1984-12-08 1986-07-10 SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen Scheibenwischeranlage, insbesondere fuer kraftfahrzeuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1697136A (en) * 1929-01-01 op btfffalo
GB1021131A (en) * 1964-02-07 1966-02-23 Dudleys Redditch Ltd Improvements relating to windscreen wipers
US4370774A (en) * 1978-01-06 1983-02-01 Itt Industries, Inc. Windshield wiper assembly
JPS55160637A (en) * 1979-05-31 1980-12-13 Mitsuba Denki Seisakusho:Kk Wiper arm responsive to vehicle speed
US4439886A (en) * 1981-03-30 1984-04-03 Honda Giken Kogyo Kabushiki Kaisha Wiper device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785491A (en) * 1986-03-31 1988-11-22 Aisin Seiki Kabushiki Kaisha Rotary and reciprocating drive device
US4991251A (en) * 1987-05-02 1991-02-12 Swf Auto-Electric Gmbh Wiper arm, especially for windshield wiper systems on motor vehicles
US4993102A (en) * 1987-09-03 1991-02-19 Asmo Co., Ltd. Variable-driving unit for wipers and a wiper device incorporating the same
US5056182A (en) * 1989-09-08 1991-10-15 Aisin Seiki Kabushiki Kaisha Wiper structure with variable wiping pressure
US5062175A (en) * 1990-05-16 1991-11-05 General Motors Corporation Windshield wiper with adjustable wiping pressure
EP0457382A1 (de) * 1990-05-16 1991-11-21 General Motors Corporation Scheibenwischer mit einstellbarem Wischdruck
US5327613A (en) * 1990-09-27 1994-07-12 Nissan Motor Co., Ltd. Automotive wiper apparatus with combined operation of spraying and wiping
US5577292A (en) * 1992-09-26 1996-11-26 Itt Automotive Europe Gmbh Windscreen wiper with pressure adjusting means
US5320333A (en) * 1993-03-01 1994-06-14 Jean Koch Spring for windshield wiper arm
US5504406A (en) * 1994-01-03 1996-04-02 Sgs-Thomson Microelectronics, Inc. Wiper system with variable holddown force
US5619886A (en) * 1994-06-30 1997-04-15 Mitsuba Electric Manufacturing Co., Ltd. Operable angle adjusting structure for wiper
EP0691248A2 (de) 1994-07-08 1996-01-10 Ford Motor Company Mechanismus zum Verstellen der Armbelastung in einem Scheibenwischersystem
US5426815A (en) * 1994-07-08 1995-06-27 Ford Motor Company Wiper system including an adjustable arm load mechanism
US5822827A (en) * 1997-02-20 1998-10-20 Itt Automotive Electrical Inc. Variable pressure windshield wiper system
CN102582580A (zh) * 2012-03-13 2012-07-18 浙江吉利汽车研究院有限公司 雨刮器压紧力调整机构

Also Published As

Publication number Publication date
JPH0613284B2 (ja) 1994-02-23
DE3600454A1 (de) 1986-07-17
JPS61166754A (ja) 1986-07-28
DE3600454C2 (de) 1992-05-21

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